libcaca/src/aafire.c

/*
 *  cacafire      fire demo for libcaca
 *  Copyright (c) 2003 Sam Hocevar <sam@hocevar.net>
 *                1998, 1999, 2001 Jan Hubicka <hubicka@freesoft.cz>
 *                All Rights Reserved
 *
 *  $Id$
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 *  02111-1307  USA
 */

#ifdef LIBCACA
#include "config.h"
#if !defined(__KERNEL__)
#   include <stdio.h>
#   include <stdlib.h>
#   include <string.h>
#endif
#include "caca.h"
#else
#include <stdio.h>
#include "aalib.h"

#define XSIZ aa_imgwidth(context)
#define YSIZ (aa_imgheight(context)-4)
#endif
#define MAXTABLE (256*5)
#ifdef LIBCACA
static caca_canvas_t *cv;
static caca_display_t *dp;
static int XSIZ, YSIZ;
static caca_dither_t *caca_dither;
static char *bitmap;
static int paused = 0;
#else
static aa_context *context;
static aa_renderparams *params;
static aa_palette palette;
#endif
static unsigned int table[MAXTABLE];
#ifdef LIBCACA
static int const pal[] =
#else
__AA_CONST static int pal[] =
#endif
{
  0, 0, 0, 0, 0, 6, 0, 0, 6, 0, 0, 7, 0, 0, 8, 0, 0, 8, 0, 0, 9, 0, 0, 10,
2, 0, 10, 4, 0, 9, 6, 0, 9, 8, 0, 8, 10, 0, 7, 12, 0, 7, 14, 0, 6, 16, 0, 5,
  18, 0, 5, 20, 0, 4, 22, 0, 4, 24, 0, 3, 26, 0, 2, 28, 0, 2, 30, 0, 1, 32, 0, 0,
  32, 0, 0, 33, 0, 0, 34, 0, 0, 35, 0, 0, 36, 0, 0, 36, 0, 0, 37, 0, 0, 38, 0, 0,
  39, 0, 0, 40, 0, 0, 40, 0, 0, 41, 0, 0, 42, 0, 0, 43, 0, 0, 44, 0, 0, 45, 0, 0,
  46, 1, 0, 47, 1, 0, 48, 2, 0, 49, 2, 0, 50, 3, 0, 51, 3, 0, 52, 4, 0, 53, 4, 0,
  54, 5, 0, 55, 5, 0, 56, 6, 0, 57, 6, 0, 58, 7, 0, 59, 7, 0, 60, 8, 0, 61, 8, 0,
  63, 9, 0, 63, 9, 0, 63, 10, 0, 63, 10, 0, 63, 11, 0, 63, 11, 0, 63, 12, 0, 63, 12, 0,
  63, 13, 0, 63, 13, 0, 63, 14, 0, 63, 14, 0, 63, 15, 0, 63, 15, 0, 63, 16, 0, 63, 16, 0,
  63, 17, 0, 63, 17, 0, 63, 18, 0, 63, 18, 0, 63, 19, 0, 63, 19, 0, 63, 20, 0, 63, 20, 0,
  63, 21, 0, 63, 21, 0, 63, 22, 0, 63, 22, 0, 63, 23, 0, 63, 24, 0, 63, 24, 0, 63, 25, 0,
  63, 25, 0, 63, 26, 0, 63, 26, 0, 63, 27, 0, 63, 27, 0, 63, 28, 0, 63, 28, 0, 63, 29, 0,
  63, 29, 0, 63, 30, 0, 63, 30, 0, 63, 31, 0, 63, 31, 0, 63, 32, 0, 63, 32, 0, 63, 33, 0,
  63, 33, 0, 63, 34, 0, 63, 34, 0, 63, 35, 0, 63, 35, 0, 63, 36, 0, 63, 36, 0, 63, 37, 0,
  63, 38, 0, 63, 38, 0, 63, 39, 0, 63, 39, 0, 63, 40, 0, 63, 40, 0, 63, 41, 0, 63, 41, 0,
  63, 42, 0, 63, 42, 0, 63, 43, 0, 63, 43, 0, 63, 44, 0, 63, 44, 0, 63, 45, 0, 63, 45, 0,
  63, 46, 0, 63, 46, 0, 63, 47, 0, 63, 47, 0, 63, 48, 0, 63, 48, 0, 63, 49, 0, 63, 49, 0,
  63, 50, 0, 63, 50, 0, 63, 51, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0,
  63, 53, 0, 63, 53, 0, 63, 53, 0, 63, 53, 0, 63, 54, 0, 63, 54, 0, 63, 54, 0, 63, 54, 0,
  63, 54, 0, 63, 55, 0, 63, 55, 0, 63, 55, 0, 63, 55, 0, 63, 56, 0, 63, 56, 0, 63, 56, 0,
  63, 56, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 58, 0, 63, 58, 0,
  63, 58, 0, 63, 58, 0, 63, 59, 0, 63, 59, 0, 63, 59, 0, 63, 59, 0, 63, 60, 0, 63, 60, 0,
  63, 60, 0, 63, 60, 0, 63, 60, 0, 63, 61, 0, 63, 61, 0, 63, 61, 0, 63, 61, 0, 63, 62, 0,
  63, 62, 0, 63, 62, 0, 63, 62, 0, 63, 63, 0, 63, 63, 1, 63, 63, 2, 63, 63, 3, 63, 63, 4,
  63, 63, 5, 63, 63, 6, 63, 63, 7, 63, 63, 8, 63, 63, 9, 63, 63, 10, 63, 63, 10, 63, 63, 11,
  63, 63, 12, 63, 63, 13, 63, 63, 14, 63, 63, 15, 63, 63, 16, 63, 63, 17, 63, 63, 18, 63, 63, 19,
  63, 63, 20, 63, 63, 21, 63, 63, 21, 63, 63, 22, 63, 63, 23, 63, 63, 24, 63, 63, 25, 63, 63, 26,
  63, 63, 27, 63, 63, 28, 63, 63, 29, 63, 63, 30, 63, 63, 31, 63, 63, 31, 63, 63, 32, 63, 63, 33,
  63, 63, 34, 63, 63, 35, 63, 63, 36, 63, 63, 37, 63, 63, 38, 63, 63, 39, 63, 63, 40, 63, 63, 41,
  63, 63, 42, 63, 63, 42, 63, 63, 43, 63, 63, 44, 63, 63, 45, 63, 63, 46, 63, 63, 47, 63, 63, 48,
  63, 63, 49, 63, 63, 50, 63, 63, 51, 63, 63, 52, 63, 63, 52, 63, 63, 53, 63, 63, 54, 63, 63, 55,
  63, 63, 56, 63, 63, 57, 63, 63, 58, 63, 63, 59, 63, 63, 60, 63, 63, 61, 63, 63, 62, 63, 63, 63};


static void
initialize (void)
{
  int i;
#ifdef LIBCACA
  uint32_t r[256], g[256], b[256], a[256];
#endif

#ifdef LIBCACA
  cv = caca_create_canvas(80, 32);
  if (!cv)
    {
      printf ("Failed to initialize libcaca\n");
      exit (1);
    }
  dp = caca_create_display(cv);
  if (!dp)
    {
      printf ("Failed to initialize libcaca\n");
      exit (1);
    }
  caca_set_display_time(dp, 10000);
  XSIZ = caca_get_canvas_width(cv) * 2;
  YSIZ = caca_get_canvas_height(cv) * 2 - 4;
#else
  context = aa_autoinit (&aa_defparams);
  if (context == NULL)
    {
      printf ("Failed to initialize aalib\n");
      exit (1);
    }
  aa_autoinitkbd (context, 0);
  params = aa_getrenderparams ();
#endif

  for (i = 0; i < 256; i++)
#ifdef LIBCACA
  {
    r[i] = pal[i * 3] * 64;
    g[i] = pal[i * 3 + 1] * 64;
    b[i] = pal[i * 3 + 2] * 64;
    a[i] = 0xfff;
  }
#else
    aa_setpalette (palette, i, pal[i * 3] * 4,
                   pal[i * 3 + 1] * 4, pal[i * 3 + 2] * 4);
#endif

#ifdef LIBCACA
  caca_dither = caca_create_dither(8, XSIZ, YSIZ - 2, XSIZ, 0, 0, 0, 0);
  caca_set_dither_palette(caca_dither, r, g, b, a);
  bitmap = malloc(4 * caca_get_canvas_width(cv)
                    * caca_get_canvas_height(cv));
  memset(bitmap, 0, 4 * caca_get_canvas_width(cv)
                      * caca_get_canvas_height(cv));
#else
  aa_hidecursor (context);
#endif
}
static void
uninitialize (void)
{
#ifdef LIBCACA
  caca_free_display(dp);
  caca_free_canvas(cv);
#else
  aa_close (context);
#endif
  exit (0);
}
static void
gentable (void)
{
  unsigned int i, p2;
  unsigned int minus = 800 / YSIZ;
  if (minus == 0)
    minus = 1;
  for (i = 0; i < MAXTABLE; i++)
    {
      if (i > minus)
        {
          p2 = (i - minus) / 5;
          table[i] = p2;
        }
      else
        table[i] = 0;
    }
}

#define MA 5
static void
firemain (void)
{
  register unsigned int i;
  unsigned char *p;
#ifndef LIBCACA
  char *bitmap = aa_image (context);
#endif
  i = 0;
#define END (bitmap + XSIZ * YSIZ)
  for (p = (unsigned char*)bitmap;
       (char*)p <= (( char *) (END));
       p += 1)
    {
      *p = table[(*(p + XSIZ - 1) + *(p + XSIZ + 1) + *(p + XSIZ)) +
                 (*(p + 2 * XSIZ - 1) + *(p + 2 * XSIZ + 1))];
    }
}

#define min(x,y) ((x)<(y)?(x):(y))
static void
drawfire (void)
{
  unsigned int i, last1, i1, i2;
  static int loop = 0, sloop = 0;
  static unsigned int height = 0;
  register unsigned char *p;
#ifndef LIBCACA
  char *bitmap = aa_image (context);
#else
  if(paused)
    goto _paused;
#endif

  height++;
  loop--;
  if (loop < 0)
    loop = rand () % 3, sloop++;;
  i1 = 1;
  i2 = 4 * XSIZ + 1;
  for (p = (unsigned char *) bitmap + XSIZ * (YSIZ + 0);
       p < ((unsigned char *) bitmap + XSIZ * (YSIZ + 1));
       p++, i1 += 4, i2 -= 4)
    {
      last1 = rand () % min (i1, min (i2, height));
      i = rand () % 6;
      for (; p < (unsigned char *) bitmap + XSIZ * (YSIZ + 1) && i != 0;
           p++, i--, i1 += 4, i2 -= 4)
        *p = last1, last1 += rand () % 6 - 2, *(p + XSIZ) = last1, last1 +=
          rand () % 6 - 2;
      *(p + 2 * XSIZ) = last1, last1 += rand () % 6 - 2;
    }
  i = 0;
  firemain ();
#ifdef LIBCACA
_paused:
  caca_dither_bitmap(cv, 0, 0, caca_get_canvas_width(cv),
                      caca_get_canvas_height(cv), caca_dither, bitmap);
  caca_set_color_ansi(cv, CACA_WHITE, CACA_BLUE);
  if (sloop < 100)
    caca_put_str(cv, caca_get_canvas_width(cv) - 30,
                  caca_get_canvas_height(cv) - 2,
                  " -=[ Powered by libcaca ]=- ");

  caca_refresh_display(dp);
  /*XSIZ = caca_get_width() * 2;
  YSIZ = caca_get_height() * 2 - 4;*/
#else
  aa_renderpalette (context, palette, params, 0, 0, aa_scrwidth (context),
                    aa_scrheight (context));
  aa_flush (context);
#endif
}
static void
game (void)
{
#ifndef LIBCACA
  int event;
#endif
  gentable ();
#ifdef LIBCACA
  for(;;)
#else
  while (!(event = aa_getevent (context, 0)) || event == AA_RESIZE)
#endif
    {
#ifdef LIBCACA
      caca_event_t ev;
      if(caca_get_event(dp, CACA_EVENT_KEY_PRESS|CACA_EVENT_QUIT, &ev, 0))
        {
          if (caca_get_event_type(&ev) & CACA_EVENT_QUIT)
            return;
          switch(caca_get_event_key_ch(&ev))
            {
                case CACA_KEY_CTRL_C:
                case CACA_KEY_CTRL_Z:
                case CACA_KEY_ESCAPE: return;
                case ' ': paused = !paused;
            }
        }
#endif
      drawfire ();
    }
}
int
main (int argc, char **argv)
{
#ifndef LIBCACA
  if (!aa_parseoptions (NULL, NULL, &argc, argv) || argc != 1)
    {
      printf ("%s", aa_help);
      exit (1);
    }
#endif
  initialize ();
#ifndef LIBCACA
  aa_resizehandler (context, (void *) aa_resize);
#endif
  game ();
  uninitialize ();
  return 1;
}